polygon_plugins.h

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* Author: Eitan Marder-Eppstein
* Author: Isaac Saito
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#ifndef PLUGINLIB_TUTORIALS_POLYGON_PLUGINS_H_
#define PLUGINLIB_TUTORIALS_POLYGON_PLUGINS_H_
#include <pluginlib_tutorials/polygon_base.h>
#include <cmath>
 
namespace polygon_plugins 
{
  class Triangle : public polygon_base::RegularPolygon
  {
    public:
      Triangle() : side_length_() {}
 
      void initialize(double side_length)
      {
        side_length_ = side_length;
      }
 
      double area()
      {
        return 0.5 * side_length_ * getHeight();
      }
 
      double getHeight()
      {
        return sqrt((side_length_ * side_length_) - ((side_length_ / 2) * (side_length_ / 2)));
      }
 
    private:
      double side_length_;
  };
 
  class Square : public polygon_base::RegularPolygon
  {
    public:
      Square() : side_length_() {}
 
      void initialize(double side_length)
      {
        side_length_ = side_length;
      }
 
      double area()
      {
        return side_length_ * side_length_;
      }
 
    private:
      double side_length_;
 
  };
};
#endif